Spot Bitcoin ETFs Just Logged Their Biggest Day Since March—Here's What's Driving It

Tuesday was a banner day for Bitcoin ETFs. U.S. spot Bitcoin funds pulled in a massive $886 million in a single day—the second-largest inflow on record and the biggest haul since March 12. That’s getting serious attention.

What’s more interesting? We’re now looking at 16 consecutive days of inflows. The crypto crowd is calling it a “second wave,” and honestly, the numbers back it up.

Fidelity’s Wise Origin Bitcoin Fund dominated the action with $378.7 million, while BlackRock’s iShares Bitcoin Trust followed with $274.4 million. Together with other funds, these spot Bitcoin ETFs are now sitting on over $60 billion in holdings—that’s institutional money talking.

Why Now?

Two big catalysts are at play:

1. Price momentum: Bitcoin just broke back above $70,000, reigniting FOMO and institutional appetite
2. Regulatory tailwinds: Recent approvals in Australia, the U.K., and Thailand show the climate is shifting globally

For context, back in March when the ETFs last saw a $1.04 billion inflow day (the record), Bitcoin went on to hit $73,679 all-time high shortly after. History could rhyme here.

There’s a plot twist: Grayscale Bitcoin Trust, which has been hemorrhaging funds all year since converting to a spot ETF in January, just logged a rare $28.2 million inflow day. That’s only the seventh inflow day since the conversion. Even the laggard is getting pulled into the momentum.

The Bigger Picture

With Fidelity, BlackRock, and other heavyweights now running tens of billions in Bitcoin ETF assets, the infrastructure for mainstream institutional Bitcoin adoption is getting real. These aren’t niche products anymore—they’re becoming part of the standard institutional playbook.

Combine that with warming regulatory sentiment worldwide, and you’ve got a setup that looks genuinely different from previous cycles.